new file mode 100644
@@ -0,0 +1,298 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include "terrain.h"
+#include "image.h"
+
+#define FALSE (0)
+#define SUCCESS (1)
+
+void freeTerrain(Terrain *terrain) {
+ if (terrain != NULL && *terrain != NULL) {
+ destroyTerrain(terrain);
+ }
+}
+
+//基本地形创建和保存测试
+bool test_terrain_render() {
+
+ printf("========test_terrain_render Start========\r\n");
+ // 创建地形
+ Terrain terrain = newTerrain(512, 512);
+ if (terrain == NULL) {
+ printf("========newTerrain Failed========\r\n");
+ return FALSE;
+ }
+
+ // 设置地形属性
+ bool landPercentage = setLandPercentage(terrain, 70);
+ if (!landPercentage) {
+ printf("========setLandPercentage Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 设置水位线
+ bool waterLevel = setWaterLevel(terrain, 70);
+ if (!waterLevel) {
+ printf("========setWaterLevel Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 获取水位线
+ altitude waterLevelAlt = getWaterLevel(terrain);
+ if (waterLevelAlt != 70) {
+ printf("========getWaterLevel Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 设置水的颜色
+ bool waterColor = setWaterColor(terrain, DEFAULT_COLOR_WATER);
+ if (!waterColor) {
+ printf("========setWaterColor Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 获取水的颜色
+ Color waterColorVal = getWaterColor(terrain);
+ if (waterColorVal != DEFAULT_COLOR_WATER) {
+ printf("========getWaterColor Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 加载纹理
+ #ifdef HAVE_NETPBM_PAM_H
+ bool textureLoaded = loadTerrainTextureFromPAM(terrain, "texture.pam");
+ if (!textureLoaded) {
+ printf("========loadTerrainTextureFromPAM Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+ #endif
+ // 平整化地形
+ bool plainTerrain = plainTerrainUnderLevel(terrain, 1);
+ if (!plainTerrain) {
+ printf("========plainTerrainUnderLevel Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 获取指定位置的海拔高度
+ for (nat i = 0; i < 3; i++) {
+ for (nat j = 0; j < 3; j++) {
+ altitude alt = getTerrainAltitude(terrain, i, j);
+ printf("DEBUG: Position (%lu,%lu) altitude: %u\n", i, j, alt);
+ if (alt != 1) {
+ printf("========getTerrainAltitude Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+ }
+ }
+
+ // 获取地形信息
+ nat width = getTerrainWidth(terrain);
+ if (width != 512) {
+ printf("========getTerrainWidth width Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+ nat length = getTerrainLength(terrain);
+ if (length != 512) {
+ printf("========getTerrainLength length Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 保存地形
+ bool saved = saveTerrain(terrain, "my_terrain.dat", RAW_TERRAIN);
+ if (!saved) {
+ printf("========saveTerrain Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 清理
+ destroyTerrain(&terrain);
+ if (terrain != NULL) {
+ printf("========destroyTerrain Failed========\r\n");
+ return FALSE;
+ }
+ printf("========test_terrain_render SUCCESS========\r\n");
+ return SUCCESS;
+}
+
+// 基础高程数据操作测试
+bool test_basic_altitude_operations() {
+ printf("========test_basic_altitude_operations Start========\r\n");
+
+ // 创建测试地形
+ Terrain terrain = newTerrain(10, 10);
+ if (terrain == NULL) {
+ printf("========newTerrain Create Failed========\r\n");
+ return FALSE;
+ }
+
+ // 获取原始高程数据
+ altitude *raw_altitudes = getRawAltitudes(terrain);
+ if (raw_altitudes == NULL) {
+ printf("========getRawAltitudes Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ altitude **altitude_grid = getAltitudeGrid(terrain);
+ if (altitude_grid == NULL) {
+ printf("========getAltitudeGrid Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 默认水位
+ altitude default_water_level = getWaterLevel(terrain);
+ // 检查默认水位是否接近 127 (255/2)
+ if (default_water_level < 120 || default_water_level > 135) {
+ printf("========getWaterLevel default Failed: %u not in expected range [120-135]========\r\n", default_water_level);
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 设置水位线
+ altitude test_water_level = 15;
+ bool waterLevel = setWaterLevel(terrain, test_water_level);
+ if (!waterLevel) {
+ printf("========setWaterLevel Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 获取水位线
+ altitude current_water_level = getWaterLevel(terrain);
+ if (current_water_level != test_water_level) {
+ printf("========setWaterLevel getWaterLevel Failed========\r\n");
+ freeTerrain(&terrain);
+ return FALSE;
+ }
+
+ // 清理
+ destroyTerrain(&terrain);
+ if (terrain != NULL) {
+ printf("========setWaterLevel destroyTerrain Failed========\r\n");
+ return FALSE;
+ }
+ printf("========test_basic_altitude_operations SUCCESS========\r\n");
+ return SUCCESS;
+}
+
+// 不同海拔颜色测试
+bool test_color_altitude_relationship() {
+ printf("========test_color_altitude_relationship Start========\r\n");
+
+ // 测试不同海拔对应的颜色 - 使用 altitude 值 (0-255)
+ altitude test_altitudes[] = {
+ 10, // 深水
+ 51, // 浅水 (0.2 * 255)
+ 102, // 海岸 (0.4 * 255)
+ 115, // 沙滩 (0.45 * 255)
+ 140, // 草地 (0.55 * 255)
+ 166, // 泥土 (0.65 * 255)
+ 204, // 岩石 (0.8 * 255)
+ 242 // 雪地 (0.95 * 255)
+ };
+
+ const char* altitude_names[] = {
+ "Deep Water (10)",
+ "Shallow Water (51)",
+ "Shore (102)",
+ "Sand (115)",
+ "Grass (140)",
+ "Dirt (166)",
+ "Rock (204)",
+ "Snow (242)"
+ };
+
+ int num_tests = sizeof(test_altitudes) / sizeof(test_altitudes[0]);
+ int valid_colors = 0;
+
+ for (int i = 0; i < num_tests; i++) {
+ Color color = terrainColorByAltitude(test_altitudes[i]);
+ printf("%s -> Color: 0x%08X\n", altitude_names[i], color);
+
+ // 检查颜色是否有效(不为0)
+ if (color != 0) {
+ valid_colors++;
+ } else {
+ printf("Warning: Color for %s is 0x00000000\n", altitude_names[i]);
+ }
+ }
+
+ // 如果大部分颜色都无效，认为测试失败
+ if (valid_colors < num_tests / 2) {
+ printf("========test_color_altitude_relationship Failed: only %d/%d valid colors========\r\n",
+ valid_colors, num_tests);
+ return FALSE;
+ }
+ printf("========test_color_altitude_relationship SUCCESS========\r\n");
+ return SUCCESS;
+}
+
+// 边界条件和错误处理测试
+bool test_edge_cases_and_error_handling() {
+ printf("========test_edge_cases_and_error_handling Start========\r\n");
+
+ // 测试空指针处理
+ altitude alt = getTerrainAltitude(NULL, 0, 0);
+ if (alt != 0) {
+ printf("========getTerrainAltitude alt Failed========\r\n");
+ return FALSE;
+ }
+
+ nat size = getTerrainWidth(NULL);
+ if (size != 0) {
+ printf("========getTerrainWidth size Failed========\r\n");
+ return FALSE;
+ }
+
+ // 测试创建极小地形
+ Terrain small_terrain = newTerrain(1, 1);
+ if (small_terrain == NULL) {
+ printf("========newTerrain small_terrain Failed========\r\n");
+ return FALSE;
+ }
+ altitude small_alt = getTerrainAltitude(small_terrain, 0, 0);
+ destroyTerrain(&small_terrain);
+ if (small_terrain != NULL) {
+ printf("========getTerrainWidth small_terrain Failed========\r\n");
+ return FALSE;
+ }
+
+ // 测试无效的陆地百分比
+ Terrain terrain = newTerrain(5, 5);
+ bool result = setLandPercentage(terrain, 150); // 无效值
+ if (result) {
+ printf("========setLandPercentage result Failed========\r\n");
+ return FALSE;
+ }
+ destroyTerrain(&terrain);
+ if (terrain != NULL) {
+ printf("========setLandPercentage destroyTerrain Failed========\r\n");
+ return FALSE;
+ }
+ printf("========test_edge_cases_and_error_handling SUCCESS========\r\n");
+ return SUCCESS;
+}
+
+int main() {
+ printf("========Test Case Start========\r\n");
+ test_terrain_render();
+ test_basic_altitude_operations();
+ test_color_altitude_relationship();
+ test_edge_cases_and_error_handling();
+ printf("========Test Case End========\r\n");
+ return 0;
+}
